Intrinsic laryngeal muscles

Question 1

Adduction and increasing tension of vocal cords

Answer 1

Cricothyroid

Question 2

Constriction of laryngeal vestibule

Answer 2

Aryepiglottic

Question 3

Shortening (reduced tension) and adduction of vocal cords

Answer 3

Thyroarytenoids and vocalis

Question 4

Closing of posterior commissure of the glottis causing vocal cord narrowing

Answer 4

Interarytenoids (transverse and oblique)

Question 5

Adduction and lengthening of arytenoids causing glottis closure

Answer 5

Lateral cricoarytenoids

Question 6

Abduction of vocal cords

Answer 6

Posterior cricoarytenoids

Question 7

Innervation of intrinsic laryngeal muscles (except for one)

Answer 7

Recurrent laryngeal nerve

Question 8

Innervation of cricothyroid muscle

Answer 8

Superior laryngeal nerve (external branch)

Question 9

Supraglottic region of larynx

BLOOD SUPPLY

Answer 9

Superior laryngeal artery

Question 10

Intraglottic region of larynx

BLOOD SUPPLY

Answer 10

Inferior laryngeal artery

Question 11

Sensory input to hypopharynx above vocal cords

Answer 11

Superior laryngeal nerve (Internal branch)

Branch of Vagus n.

Question 12

Motor function of cricothyroid muscle of larynx

Answer 12

Superior laryngeal nerve (External branch)

Branch of Vagus n.

Question 13

Sensory information to subglottic area and trachea

Answer 13

Recurrent laryngeal nerve

Branch of Vagus n.

Question 14

Motor function of internal laryngeal muscles (except cricothyroid)

Answer 14

Recurrent laryngeal nerve

Branch of Vagus n.

Question 15

Innervation of pharynx, larynx, soft palate

Answer 15

Glossopharyngeal (CN IX)
Vagus (CN X)
Spinal Accessory (CN XI)

Question 16

Afferent (sensory) innervation of larynx/phyarynx

Answer 16

Glossopharyngeal—>Medulla

Question 17

Efferent (motor) innervation of larynx/pharynx

Answer 17

Vagus n.—->gag reflex